Chipless RFID tag and method for communicating with the RFID...

Details Chipless RFID tag and method for communicating with the RFID... Chipless RFID tag and method for communicating with the RFID...

2007-08-28

2011-11-29

Wu, Daniel (Department: 2612)

Communications: electrical

Selective

Interrogation response

C340S010410, C340S010520, C340S010600, C340S572400, C340S572300, C235S375000, C235S382000

Reexamination Certificate

active

08068010

ABSTRACT:
A radio frequency identification (RFID) tag and a method and system for communicating with the RFID tag. The RFID tag includes a first and second structure respectively holding first data and second data that is complementary to the first data. The RFID tag does not include a microchip. An electromagnetic radio frequency signal is transmitted from an interrogator to the RFID tag. The interrogator receives, from the RFID tag, a response signal including third data being the first data or a combination of the first data and the second data. The interrogator extracts the third data from the response signal. A default value equal to the combination of the first data and the second data is stored in the interrogator. If the interrogator determines that the third data is unequal/equal to the default value, then a screen of the interrogator displays that the RFID tag is enabled
ot enabled.

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patent: 6997388 (2006-02-01), Yogev et al.
patent: 2002/0149480 (2002-10-01), Shanks et al.

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